CN113497545B

CN113497545B - IGCT driving device, IGCT module, electronic equipment and control method

Info

Publication number: CN113497545B
Application number: CN202010270876.3A
Authority: CN
Inventors: 王俊; 詹长江; 汪涛; 李乐乐; 张翔; 刘磊; 周晨
Original assignee: NR Electric Co Ltd; NR Engineering Co Ltd
Current assignee: NR Electric Co Ltd; NR Engineering Co Ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2022-06-28
Anticipated expiration: 2040-04-08
Also published as: CN113497545A

Abstract

The application relates to a drive arrangement of IGCT, its characterized in that, including gate pole drive unit, get ability unit, first switch, second switch, voltage stabilizing unit, sampling unit, the control unit, wherein: the gate driving unit is used for being connected with a gate of the IGCT device; the energy obtaining unit is used for being connected with the IGCT device in parallel so as to obtain energy by utilizing the voltage at two ends of the IGCT device, and comprises: the first energy-taking module is connected with the IGCT device in parallel, and the second energy-taking module is connected with the IGCT device in parallel; the voltage stabilizing unit is connected to the first energy taking module and the second energy taking module through the first switch and the second switch respectively and is connected with the gate pole driving unit; the sampling unit collects energy storage parameters of the first energy taking module and energy storage parameters of the second energy taking module; the control unit controls the first switch and the second switch according to the sampling value output by the sampling unit.

Description

IGCT driving device, IGCT module, electronic equipment and control method

Technical Field

The invention belongs to the field of power electronic semiconductor switching devices, and particularly relates to a driving device of an IGCT (integrated gate commutated thyristor), an IGCT module, electronic equipment and a control method of the driving device of the IGCT.

Background

An integrated gate commutated thyristor IGCT was developed from a gate turn-off thyristor GTO, which connects a gate drive unit to the GCT chip gate in a low inductance manner. IGCT combines the advantages of GTO and IGBT, and has the characteristics of high voltage, large current, low on-state voltage, high switching frequency, high reliability, compact structure, high yield and the like. Due to the excellent characteristics of IGCT, IGCT is increasingly used in high voltage high power electronic converters.

The gate pole needs to provide current up to hundreds of amperes instantaneously in the switching-on process of the IGCT, and provides reverse gate pole voltage and realizes gate pole commutation when the IGCT is switched off; in addition, the gate driving unit is required to inject an on-state gate-maintaining current or supply a reverse voltage to the gate in order to maintain the IGCT to be reliably turned on or off in the on and off states. Therefore, the power consumption of the gate drive unit of the IGCT is very large, reaches dozens of watts and is far higher than the drive power consumption of a thyristor or an IGBT, so that the design of the gate drive power supply of the IGCT becomes a difficult problem.

The inventor of the present application finds that the common IGCT driving device generally has the disadvantages of high cost, complex structure, high isolation voltage and heavy weight. The inventor of the present application finds that the existing partial IGCT driving device has the following two problems: 1) only a single energy-taking power supply is provided, and after the alternating current system fails and loses voltage, because the energy required by IGCT gate triggering is far greater than that of a thyristor, the single energy-taking power supply cannot ensure that the IGCT is reliably triggered in a long enough time; 2) the energy taking circuit is not provided with a device for preventing the energy storage capacitor from discharging reversely, and after the thyristor is conducted, the energy storage capacitor can discharge reversely, so that energy loss of the energy storage capacitor is caused, and the energy taking circuit is not suitable for IGCT which needs large energy to trigger.

Disclosure of Invention

The present application is directed to a driving apparatus of an IGCT, an IGCT module, an electronic device, and a control method of a driving apparatus of an IGCT.

One embodiment of the present application provides a driving apparatus for an IGCT, including a gate driving unit, an energy obtaining unit, a first switch, a second switch, a voltage stabilizing unit, a sampling unit, and a control unit, wherein: the gate driving unit is used for being connected with a gate of the IGCT device; the energy obtaining unit is used for being connected with the IGCT device in parallel so as to obtain energy by utilizing the voltage at two ends of the IGCT device, and comprises: the first energy-taking module is connected with the IGCT device in parallel, and the second energy-taking module is connected with the IGCT device in parallel; the voltage stabilizing unit is connected to the first energy taking module and the second energy taking module through the first switch and the second switch respectively and is connected with the gate pole driving unit; the sampling unit collects energy storage parameters of the first energy taking module and energy storage parameters of the second energy taking module; the control unit controls the first switch and the second switch according to the sampling value output by the sampling unit.

Another embodiment of the present application provides an IGCT module, including: an IGCT device; in any one of the driving devices, the energy obtaining unit of the driving device is connected in parallel with the IGCT device, and the gate driving unit of the driving device is connected with the gate of the IGCT device.

Another embodiment of the present application provides an electronic device including: any of the foregoing IGCT modules.

Another embodiment of the present application provides a method for controlling a driving apparatus of an IGCT, which is applied to any one of the driving apparatuses, the method including: the control end element outputs a control signal to control the first switch to be switched off and the second switch to be switched off respectively, and the first energy storage module and the second energy storage module utilize voltages at two ends of the IGCT to respectively obtain energy; when the energy storage parameter sampling value of the first energy storage capacitor is larger than or equal to a first threshold value, the control unit outputs a control signal to close the first switch, and the first energy storage capacitor supplies power to the voltage stabilizing unit; when the energy storage parameter sampling value of the first energy storage capacitor is smaller than or equal to a second threshold value, the control unit outputs a control signal to close the second switch, disconnect the first switch and supply power to the voltage stabilizing unit through the second energy storage capacitor.

By using the driving device of the IGCT, the IGCT module, the electronic equipment and the control method of the driving device of the IGCT, the following beneficial technical effects can be realized by connecting at least two paths of energy-taking modules at two ends of the IGCT in parallel: 1) the driving device can obtain energy through voltages at two ends of the IGCT, high-voltage self-energy obtaining is achieved, and a special external alternating current or direct current power supply is not needed. 2) The energy taking device and the gate pole driving unit adopt the same reference ground without considering high-voltage isolation between the energy taking device and the gate pole driving unit, thereby greatly simplifying circuit design. 3) The mode of main power supply and standby power storage under the normal working mode is adopted, when the main power supply is insufficient, the standby power supply can continue to supply power, and after the alternating current system fails and loses voltage, the standby power supply has enough energy to drive the IGCT to be switched on and switched off within a period of time, so that system recovery delay caused by the fact that an energy storage capacitor needs to be charged can be avoided.

Drawings

Fig. 1 shows a schematic view of a drive device of an IGCT according to an exemplary embodiment of the present disclosure.

Fig. 2 shows a schematic diagram of an IGCT module according to another embodiment of the present application.

Fig. 3 is a flowchart illustrating a method for controlling a driving apparatus of an IGCT according to another embodiment of the present disclosure.

Detailed Description

The following embodiments of the present invention will be described with reference to "a driving apparatus for IGCT, an IGCT module, an electronic device, and a method for controlling a driving apparatus for IGCT" in accordance with specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

Another embodiment of the present application provides an IGCT module, including: an IGCT device; in any of the foregoing driving apparatuses, the energy obtaining unit of the driving apparatus is connected in parallel with the IGCT device, and the gate driving unit of the driving apparatus is connected to the gate of the IGCT device.

Another embodiment of the present application provides an electronic device including: any of the aforementioned IGCT modules.

By using the driving device of the IGCT, the IGCT module, the electronic equipment and the control method of the driving device of the IGCT, the following beneficial technical effects can be realized by connecting at least two paths of energy-taking modules at the two ends of the IGCT in parallel: 1) the driving device can obtain energy through voltages at two ends of the IGCT, high-voltage self-energy obtaining is achieved, and a special external alternating current or direct current power supply is not needed. 2) The energy taking device and the gate pole driving unit adopt the same reference ground without considering high-voltage isolation between the energy taking device and the gate pole driving unit, thereby greatly simplifying circuit design. 3) The mode of main power supply and standby power storage under the normal working mode is adopted, when the main power supply is insufficient, the standby power supply can continue to supply power, and after the alternating current system fails and loses voltage, the standby power supply has enough energy to drive the IGCT to be switched on and switched off within a period of time, so that system recovery delay caused by the fact that an energy storage capacitor needs to be charged can be avoided.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be understood that the terms "first," "second," "third," and "fourth," etc. in the claims, description, and drawings of the present application are used to distinguish between different objects, and are not used to describe a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the application. As used in the specification and claims of this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this application refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

Fig. 1 shows a schematic view of a drive device of an IGCT according to an embodiment of the present application.

As shown in fig. 1, the apparatus 1000 may include: the energy-taking unit 110, the first switch T1, the second switch T2, the sampling unit 120, the control unit 130, the voltage stabilization unit 140, and the gate driving unit 150.

As shown in fig. 1, the gate driving unit 150 may be electrically connected to a gate (not shown) of an IGCT device (not shown), among others. Alternatively, the gate drive unit 150 may be electrically connected to the gate of the IGCT device, either directly or indirectly. The gate drive unit 150 may be used to provide the electrical signals required to directly drive the IGCT devices.

As shown in fig. 1, the energy extracting unit 110 may be connected in parallel with the IGCT device, i.e., two ends P1 and P2 of the energy extracting unit 110 may be connected to an anode (not shown) and a cathode (not shown) of the IGCT device, respectively. The energy extraction unit 110 may extract energy from the voltage across the IGCT device (between the anode and the cathode) and store the extracted electrical energy in an energy storage element within the energy extraction unit 110. Alternatively, the energy storage element in the energy fetching unit 110 may be a capacitor.

The energy extracting unit 110 may include at least an energy extracting module 111 and an energy extracting module 112 connected in parallel. The energy obtaining module 111 and the energy obtaining module 112 may be both connected in parallel with the IGCT device. Alternatively, the energy-extracting module 111 may serve as a main energy-extracting module, and the energy-extracting module 112 may serve as a standby energy-extracting module. Alternatively, the energy extracting module 111 and the energy extracting module 112 may be backup to each other.

Optionally, the energy fetching module 111 may include an energy storage capacitor C3 and a first RC branch (not shown). Optionally, an energy storage capacitor C3 may be connected in series with the first RC branch. Optionally, the first RC branch may include a resistor R1 and a capacitor C1. Alternatively, the resistor R1 and the capacitor C1 may be connected in series. Alternatively, the energy storage capacitor C3 may be electrically connected to the voltage stabilizing unit 140 through the switch T1. Alternatively, when the switch T1 is closed, the storage capacitor C3 may supply power to the voltage stabilizing unit 140.

Optionally, the energy fetching module 112 may include an energy storage capacitor C4 and a second RC branch (not shown). Optionally, an energy storage capacitor C4 may be connected in series with the second RC branch. Optionally, the first RC branch may include a resistor R2 and a capacitor C2. Alternatively, the resistor R2 and the capacitor C2 may be connected in series. Alternatively, the energy storage capacitor C4 may be electrically connected to the voltage stabilizing unit 140 through the switch T2. Alternatively, the energy storage capacitor C4 may supply power to the voltage regulator unit 140 when the switch T2 is closed.

Optionally, the energy extraction module 111 may further comprise a diode D1, wherein the diode D1 may be connected in series with the energy storage capacitor C3 and the first RC branch. Optionally, the energy extraction module 112 may also include a diode D2, wherein the diode D2 may be connected in series with the energy storage capacitor C4 and the second RC branch. Optionally, a diode D1 may be used to ensure unidirectional charging of the energy extraction module 111, preventing the energy storage capacitor C3 from discharging across the IGCT device along the first RC branch. Diode D2 may be used to ensure unidirectional charging of the energy extraction module 112, preventing the energy storage capacitor C4 from discharging across the IGCT device along the second RC branch.

As shown in FIG. 1, the voltage regulator unit 140 may be electrically connected between the power take-off unit 110 and the gate drive unit 150. Alternatively, the voltage stabilizing unit 140 may be electrically connected to the energy extracting unit 110 through the switch T1 and the switch T2. Voltage regulation unit 140 may convert electrical energy from power take unit 110 to a regulated DC voltage U that gate drive unit 150 may directly utilize_DC. The DC voltage U output by the voltage regulation unit 140_DCMay be used as a power supply for the gate drive unit 150.

As shown in fig. 1, the switch T1 may be electrically connected between the energy-fetching module 111 and the voltage-stabilizing unit 140. The switch T2 may be electrically connected between the energy capture module 112 and the voltage regulator unit 140. The sequential output of power to the voltage stabilizing unit 140 by the energy storage capacitor C3 and the energy storage capacitor C4 can be realized by controlling the switch T1 and the switch T2, respectively, and power can be supplied to the IGCT device by the power output by the voltage stabilizing power supply 140. The switches T1 and T2 may be mechanical switches or semiconductor switches. Alternatively, the semiconductor switch may include a field effect transistor, an IGBT, or the like.

As shown in FIG. 1, regulated power supply 140 may convert a voltage input at an input (not shown) of regulated power supply 140 to a regulated voltage output at an output (not shown) of regulated power supply 140. Alternatively, the regulated power supply 140 may be electrically connected to the gate driving unit 150 and supply power to the gate driving unit 150.

As shown in fig. 1, the sampling unit 120 may be connected to the

energy storage modules

111 and 112, respectively. The sampling unit 120 may be configured to collect energy storage parameters of the energy storage module 111 and energy storage parameters of the energy storage module 112, respectively. Alternatively, the energy storage parameter may include a voltage across the energy storage capacitor, or a current flowing out of the energy storage capacitor, or the like. Alternatively, the sampling unit 120 may be directly electrically connected to the

energy storage modules

111 and 112, or may be coupled to the

energy storage modules

111 and 112 by using an isolation sensor such as a transformer or a hall module. Alternatively, the sampling value output by the sampling unit 120 may be used as a judgment basis for the control logic analysis of the switch T1 and the switch T2.

As shown in fig. 1, the control unit 130 may be connected with the sampling unit 120, and connected with the switch T1 and the switch T2. Alternatively, the control unit 130 may control the switch T1 and the switch T2 according to the sampling result of the sampling unit 120. Alternatively, the control unit may control the switch T1 and the switch T2 by outputting control signals.

Alternatively, the control unit 130 may be configured according to the following logic: when the energy storage parameter of the energy storage capacitor C3 is greater than or equal to the first threshold, the switch T1 may be closed by outputting a control signal, so that the energy storage capacitor C3 supplies power to the regulated power supply 140; when the energy storage parameter of the energy storage capacitor C3 is less than or equal to the second threshold, the control signal can be output to control the switch T2 to be closed and the switch T1 to be opened, respectively, so that the energy storage capacitor C4 supplies power to the regulated power supply 140. Optionally, the first threshold may be greater than the second threshold, and the first threshold and the second threshold may also be equal. Wherein the first threshold and the second threshold may both be the energy storage parameter of the energy storage module 111 that ensures that the gate drive unit 150 can operate properly.

Optionally, the control unit 130 may be further configured to output the control signal to control the switch T1 to be closed and the switch T2 to be opened, respectively, when the energy storage parameter of the energy storage capacitor C3 is greater than the first threshold again.

Alternatively, the energy storage parameter may be a voltage across the energy storage capacitor. Further, the control unit 120 may be configured according to the following operation modes: at the initial stage of power-up of the circuit including the IGCT device, a control signal is sent to control the switch T1 and the switch T2 to be turned off. When the sampling value of the voltage across the energy storage capacitor C3 is greater than or equal to the first threshold value, the switch T1 is closed, and the energy obtaining module 111 is used to supply power to the voltage stabilizing unit 140. When the sampled value of the voltage across the energy storage capacitor C3 is smaller than the second threshold, the switch T1 may be opened, and the switch T2 may be closed, so as to supply power to the voltage stabilizing unit through the energy-taking branch 112. Alternatively, when the voltage across the capacitor C3 is again equal to or greater than the first threshold, the switch T1 may be closed, and the switch T2 may be opened.

Optionally, the sampling unit 120 may be further electrically connected to an output terminal (not shown) of the voltage stabilizing unit 140 to collect the output voltage U of the voltage stabilizing unit 140_DC. Alternatively, it may be dependent on the voltage U_DCDetermines whether the driving device 1000 is in a normal operating state. Alternatively, it may be at voltage U _DCWhen the threshold value is greater than or equal to the third threshold value, the driving device 1000 enters a ready state. In the ready state, the driving apparatus 1000 can receive the operation command signal and drive the IGCT device to perform the desired operation. Wherein the third threshold value may be U for ensuring stable operation of the gate driving unit 150_DCThe value of the voltage. Alternatively, the voltage U may be set at_DCIs less than a third threshold value.

Alternatively, the energy-fetching module 111 may be a main energy-fetching module, the energy-storing capacitor C3 may be a main power energy-storing capacitor, and the switch T1 is a main power switch. The energy-taking module 112 may be a standby energy-taking module, the energy-storing capacitor C4 may be a standby energy-storing capacitor, and the switch T2 may be a standby power supply switch. The energy obtaining module 111 may supply power to the voltage stabilizing unit 140 frequently; the energy fetching module 112 may replace the energy fetching module 111 to supply power to the voltage stabilizing unit 140 when the energy fetching module 111 fails or when the energy storage capacitor C3 has insufficient energy storage.

Alternatively, the cathode (not shown) of the IGCT device may be referenced to ground. For example: the reference terminals of the sampling unit 120, the control unit 130, the voltage stabilizing unit 140, and the gate driving unit 150 may be commonly connected to the cathode of the IGCT device.

Optionally, the driving apparatus 1000 may also include a third energy-taking module, … … and an nth energy-storing module. The third energy-taking module, … … and the Nth energy-taking module can comprise an energy storage capacitor and an RC branch which are connected in series. The control unit 130 may be configured to sequentially control the first energy obtaining module, the second energy obtaining module, … …, and the nth energy obtaining module to supply power to the voltage stabilizing unit 140.

Fig. 2 shows a schematic view of an IGCT module according to another embodiment of the present application.

As shown in fig. 2, the IGCT module 2000 may include: an IGCT device Q1 and a drive device 200 connected in parallel. The driving device 200 is similar to the driving device shown in fig. 1, and is not repeated.

As shown in the exemplary embodiment, the storage capacitor C3 and the storage capacitor C4 in the driving apparatus 200 may be electrically connected to the cathode K of the IGCT device Q1. A first RC branch (not shown) and a second RC branch (not shown) may each be electrically connected to anode a of IGCT device Q1. As shown in the exemplary embodiment, the capacitance C1 of the first RC branch may be electrically connected to the anode a of the IGCT device; the capacitor C2 of the second RC branch may be electrically connected to the anode a of the IGCT device. Optionally, the resistor R1 and the capacitor C1 may also switch positions, and the resistor R2 and the capacitor C2 may also switch positions.

As shown in the example embodiment, an anode (not shown) of diode D1 may be electrically connected to the first RC branch and a cathode (not shown) of diode D1 may be electrically connected to the storage capacitor C3. Optionally, the first RC branch and the diode D1 may also switch positions. For example, the anode of diode D1 may be electrically connected to the anode of the IGCT device and the cathode of diode D1 may be connected to the first RC branch.

As shown in the example embodiment, an anode (not shown) of diode D2 may be electrically connected to the second RC branch and a cathode (not shown) of diode D2 may be electrically connected to the storage capacitor C4. Optionally, the second RC branch and the diode D2 may also switch positions. For example, the anode of diode D2 may be electrically connected to the anode of the IGCT device and the cathode of diode D2 may be connected to the second RC branch.

The application further provides that an electronic device comprises any one of the IGCT modules. Alternatively, the electronic device may be

Fig. 3 is a flowchart illustrating a method for controlling a driving apparatus of an IGCT according to another embodiment of the present disclosure. The method 3000 can be applied to any of the foregoing IGCT device driving apparatuses.

As shown in fig. 3, method 3000 may include: s310, S320 and S330.

In S310, the control unit may be used to output a control signal to control the first switch and the second switch to be turned off. At S310, the first energy storage module and the second energy storage module may respectively use the voltages at two ends of the IGCT device to obtain energy, and store the obtained energy in their own energy storage modules. For example, the first energy storage module may store the acquired electric energy in the first energy storage capacitor, and the second energy storage module may store the acquired electric energy in the second energy storage capacitor.

In S320, when the sampled value of the energy storage parameter of the first energy storage module is greater than or equal to the first threshold, the control unit may output a control signal to close the first switch. The energy storage parameter of the first energy storage module may be a voltage across the first energy storage capacitor or a discharge current of the first energy storage capacitor. The first threshold value may be a value of a storage parameter of the first storage module which ensures efficient operation of the gate drive unit. The voltage stabilizing unit can be powered by the first energy storage capacitor. The stabilized voltage power supply can convert the electric energy from the first energy storage capacitor into stable direct current voltage output. The dc voltage output may be used to power the gate drive unit. Optionally, in S320, the control unit may further output a control signal to ensure that the second switch is effectively turned off.

In S330, when the energy storage parameter of the first energy storage unit is less than or equal to the second threshold, the control unit may output a control signal to close the second switch and open the first switch. The second threshold value may be a value of a storage parameter of the first storage capacitor ensuring proper operation of the gate drive unit. Alternatively, the second threshold may be smaller than the first threshold, and the second threshold may also be equal to the first threshold. At this time, the second energy storage capacitor may be utilized to supply power to the voltage stabilizing unit. The voltage stabilizing unit can convert the electric energy from the second energy storage capacitor into stable direct current voltage for output. The dc voltage output may be used to power the gate drive unit.

Optionally, after S330, the method may further include: when the voltage across the first energy storage capacitor is greater than or equal to the first threshold again, the control unit may output a control signal to close the first switch and open the second switch. The first energy storage capacitor can supply power to the voltage stabilizing unit.

Optionally, the method 3000 may further include:

and collecting the voltage at two ends of the first energy storage capacitor.

And if the output voltage of the voltage stabilizing unit is less than the third threshold value, alarming.

After S330, the method 3000 may further include: when the energy storage parameter of the (N-1) th energy storage unit is smaller than or equal to the (N + 1) th threshold value, the control unit can output a control signal to close the (N) th switch and open the (N-1) th switch, wherein N is an integer larger than or equal to 3. The energy storage parameter of the N-1 energy storage unit can be voltage at two ends of the N-1 energy storage capacitor or discharge current of the N-1 energy storage capacitor. The N +1 th threshold may be a value of a storage parameter of the N-1 th storage capacitor that ensures proper operation of the gate drive unit. Alternatively, the N +1 th threshold may be equal to the second threshold. At this time, the nth energy storage capacitor may be utilized to supply power to the voltage stabilizing unit.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The foregoing embodiments have been described in detail to illustrate the principles and implementations of the present application, and the foregoing embodiments are only used to help understand the method and its core idea of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.

Claims

1. The IGCT driving device is characterized by comprising a gate driving unit, an energy obtaining unit, a first switch, a second switch, a voltage stabilizing unit, a sampling unit and a control unit, wherein:

The gate driving unit is used for being connected with a gate of the IGCT device;

the energy obtaining unit is used for being connected with the IGCT device in parallel so as to obtain energy by utilizing the voltage at two ends of the IGCT device, and comprises:

a first energy-taking module connected in parallel with the IGCT device,

the second energy-taking module is connected with the IGCT device in parallel;

the voltage stabilizing unit is connected to the first energy taking module and the second energy taking module through the first switch and the second switch respectively and is connected with the gate pole driving unit;

the sampling unit collects energy storage parameters of the first energy taking module and energy storage parameters of the second energy taking module;

the control unit controls the first switch and the second switch according to the sampling value output by the sampling unit.

2. The apparatus of claim 1, wherein,

the first energy taking module comprises a first RC energy taking branch and a first energy storage capacitor which are connected in series;

the second energy taking module comprises a second RC energy taking branch and a second energy storage capacitor which are connected in series;

the first energy storage capacitor is connected to the voltage stabilizing unit through the first switch;

the second energy storage capacitor is connected to the voltage stabilizing unit through the second switch.

3. The apparatus of claim 2, wherein,

the first energy-taking module further comprises a first diode which is connected with the first RC energy-taking branch in series;

the second energy taking module further comprises a second diode which is connected with the second RC energy taking branch in series.

4. The apparatus of claim 2, wherein the sampling unit, the control unit, the voltage stabilization unit, and the gate drive unit all have a cathode of the IGCT device as a reference ground.

5. The apparatus of claim 2, wherein the control unit is configured to:

when the energy storage parameter sampling value of the first energy storage capacitor is larger than or equal to a first threshold value, the control unit outputs a control signal to close the first switch, and the first energy storage capacitor supplies power to the voltage stabilizing unit;

when the energy storage parameter sampling value of the first energy storage capacitor is smaller than or equal to a second threshold value, the control unit outputs a control signal to close the second switch, disconnect the first switch and supply power to the voltage stabilizing unit through the second energy storage capacitor.

6. The apparatus of claim 1, wherein the sampling unit is further coupled to an output terminal of the voltage stabilization unit to collect an output voltage of the voltage stabilization unit.

7. The apparatus of claim 1, wherein,

the first switch comprises at least one of a mechanical switch and a semiconductor switch;

the second switch includes at least one of a mechanical switch and a semiconductor switch.

8. An IGCT module comprising:

an IGCT device;

drive arrangement according to at least one of claims 1 to 7, the energy take-off unit of the drive arrangement being connected in parallel with the IGCT device, the gate drive unit of the drive arrangement being connected to the gate of the IGCT device.

9. An electronic device, comprising:

the IGCT module of claim 8.

10. A method of controlling a drive of an IGCT, applied to a drive of at least one of claims 1-7, the method comprising:

the control unit outputs control signals to control the first switch to be switched off and the second switch to be switched off respectively, and the first energy storage module and the second energy storage module utilize voltages at two ends of the IGCT to respectively obtain energy;

11. The method of claim 10, further comprising:

and if the output voltage of the voltage stabilizing unit is less than a third threshold value, alarming.